Numerical Simulation of the Eddy Current Effects on the Arc Splitting Process  

作　　者：杨飞 荣命哲 吴翊 孙昊 马瑞光 纽春萍 

机构地区：[1]State Key Lab of Electrical Insulation and Power Equipment,School of Electrical Engineering,Xi'an Jiaotong University

出　　处：《Plasma Science and Technology》2012年第11期974-979,共6页等离子体科学和技术（英文版）

基　　金：supported by National Natural Science Foundation of China (Nos.51177124,51007072);the Doctoral Foundation of Ministry of Education of China (Nos.20110201130006,20110201120069);China Postdoctoral Science Foundation (No.2012M512002)

摘　　要：This paper focuses on a numerical simulation of the arc plasma behavior in the arc splitting process, considering the eddy currents in the electrodes and the splitter plate. Based on three-dimensional （3D） magneto-hydrodynamic （MHD） theory, a thin layer of nonlinear electrical resistance elements is used in the model to represent the voltage drop of plasma sheath and the formation of new arc root in order to include the arc splitting process in the simulation. In the arcing process, eddy currents in metal parts are generated by a time-varying magnetic field. The arc model is calculated with the time-varying magnetic field term, so that the eddy current effects can be considered. The effect of nonlinear permeability of a ferromagnetic material is also involved in the calculation. Using the simulation results for the temperature, velocity and current density distribution, the arc splitting process is analyzed in detail. The calculated results are compared with the simulation neglecting eddy currents.This paper focuses on a numerical simulation of the arc plasma behavior in the arc splitting process, considering the eddy currents in the electrodes and the splitter plate. Based on three-dimensional （3D） magneto-hydrodynamic （MHD） theory, a thin layer of nonlinear electrical resistance elements is used in the model to represent the voltage drop of plasma sheath and the formation of new arc root in order to include the arc splitting process in the simulation. In the arcing process, eddy currents in metal parts are generated by a time-varying magnetic field. The arc model is calculated with the time-varying magnetic field term, so that the eddy current effects can be considered. The effect of nonlinear permeability of a ferromagnetic material is also involved in the calculation. Using the simulation results for the temperature, velocity and current density distribution, the arc splitting process is analyzed in detail. The calculated results are compared with the simulation neglecting eddy currents.

关 键 词：arc plasma LOW-VOLTAGE SIMULATION eddy current 

分 类 号：TM501.2[电气工程—电器] O53[理学—等离子体物理]